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Finding the Fourth Proportional to 1,998,509.25, 2,997,789.39 and 578,566.70

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Solution

The fourth proportional to 1,998,509.25, 2,997,789.39 and 578,566.70 is: 867,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,509.25 : 2,997,789.39 = 578,566.70 : x
  2. Step 2: Convert to fraction form
    1,998,509.25/2,997,789.39 = 578,566.70/x
  3. Step 3: Cross multiply
    1,998,509.25x = 2,997,789.39 × 578,566.70
  4. Step 4: Simplify right side
    1,998,509.25x = 1,734,421,099,678.37
  5. Step 5: Solve for x
    x = 1,734,421,099,678.37/1,998,509.25
  6. Step 6: Final answer
    x = 867,857.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.